Changelog:
==========
[bug] [typing] Fixed various typing issues observed with pyright, including issues
involving the combination of Function and
MigrationContext.begin_transaction().
[bug] [autogenerate] Fixed error raised by alembic when running autogenerate after removing
a function based index.
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
